© Semiconductor Components Industries, LLC, 2006

November, 2006 − Rev. 1

1

Publication Order Number:

NCP3063/D

NCP3063, NCP3063B,

NCV3063

1.5 A, Step−Up/Down/

Inverting Switching

Regulators

The NCP3063 Series is a higher frequency upgrade to the popular

MC34063A and MC33063A monolithic DC−DC converters. These

devices consist of an internal temperature compensated reference,

comparator, a controlled duty cycle oscillator with an active current

limit circuit, a driver and a high current output switch. This series was

specifically designed to be incorporated in Step−Down, Step−Up and

Voltage−Inverting applications with a minimum number of external

components.

Features

Applications

Figure 1. Typical Buck Application Circuit

L

REFERENCE

D

COMPARATOR

5

R2

R

S

Q

SET dominant

+

−

7

COMPARATOR

CT

3

Rs

1.25 V

8

NCP3063

REGULATOR

TSD

0.2 V

+

−

2

6

R1

R

S

Q

4

1

12 V

CT

2.2 nF

OSCILLATOR

47

mH

3.3 V /

800 mA

+

470

mF

+

220

mF

SET dominant

0.15

W

3.9 k

W

2.4 k

W

PDIP−8

P, P1 SUFFIX

CASE 626

http://onsemi.com

MARKING

DIAGRAMS

8

DFN−8

SUFFIX

CASE 488

SOIC−8

D SUFFIX

CASE 751

1

8

NCP3063x

AWL

YYWWG

NCP3063x = Specific Device Code

x = B

A

= Assembly Location

L, WL

= Wafer Lot

Y, YY

= Year

W, WW

= Work Week

G

= Pb−Free Package

(Note: Microdot may be in either location)

See detailed ordering and shipping information in the package

dimensions section on page 13 of this data sheet.

ORDERING INFORMATION

V3063

ALYW

G

1

3063x

ALYW

G

1

NCV3063

AWL

YYWWG

1

1

1

8

1

3063y

ALYW

G